Joseph F. Robertson Productions

After Los Angeles is invaded by an army of subterranean monsters, a small group of people must fight for survival in the deserted metropolis.

After an astronaut space capsule is detonated in orbit, with the astronaut begging to be killed, a teenager couple finds a severed arm on a remote beach. The boy takes the arm home, where it becomes animate and the alien force which animates it soon possesses his mind as well.